... could be alternative for Ringfeder, Sati,Chiaravalli, Tollok etc Our Power Locks are interchangeable to: Ringfeder, Tollok, Chiaravalli, Sati, Challenge ... and high efficient transmitting; 5. While running under overload, Power Lock can protect the equipment from breakdown. They are ... Locking Assembly, Locking Elements, Keyless Shaft Locking, Locking Devices, Power Lock , Cone Clamping Element etc.